Azure, surmounting a lightning flash gules, a globe argent with latitude and longitude lines dark blue and encircled with a planetary ring of the last strewn with stars of the third and fimbriated of the like all bandwise, in chief an olive branch fesswise or, all within a diminished border of the third. (Approved 11 March 1959.)

The 19th Air Division was first organized on 30 June 1929 as the 19th Composite Wing at France Field, Canal Zone. It was a consolidation of Air Corps units in the Canal Zone, and was activated on 1 April 1931. It consisted of the following units:

During the 1930s the 19th Wing participated in maneuvers, flew patrol missions, made good will flights to Central American and South American countries, and flew mercy missions in South America. In January 1939, it flew missions to aid earthquake victims in Santiago, Chile.

It was redesignated as the 19th Bombardment Wing on 19 October 1940 as the United States prepared for a possible war. By late August 1941, a total of 71 aircraft, consisting of B-18 Bolos; B-17B Flying Fortresses; A-20 Havocs, and A-17A Nomads were assigned to various groups under its control.

IX Bomber Command was quickly put together in late 1942 to aid the British Eighth Army's drive west from Egypt into Libya against Rommel's Afrika Corps during the Western Desert Campaign. It consisted of units and aircraft put together for an attack on Japan which was canceled after the Burma Road was captured by Japanese forces, making its planned base in China unable to support the attack (HALPRO Mission); by Pearl Harbor Attack and Philippines survivor early model B-17 Flying Fortresses that had been sent from Australia, and by some early B-24 Liberator and B-25 Mitchells which were sent across the South Atlantic Transport route from Morrison Field, Florida via Brazil and across Central Africa via Sudan.

Reinforced during early 1943, its subordinate units attacked enemy storage areas, motor transports, troop concentrations, airdromes, bridges, shipping, and other targets in Libya, Tunisia, and other areas. In May 1943 after the Tunisian Campaign ended, Tunisia became available for launching attacks on Pantelleria (Operation Corkscrew), Sicily (Operation Husky), and mainland Italy.

IX Bomber groups attacked airfields and rail facilities in Sicily and took part in Operation Husky, carried paratroopers, and flew reinforcements to ground units on the island. Heavy bomb units of the Ninth also participated in the famed low-level assault on oil refineries at Ploesti (Operation Tidal Wave) Romania on 1 August 1943.

Later in August 1943, it was decided to reassign Ninth Air Force to England to be the tactical air force in the planned invasion of France scheduled for May 1944. The IX Bomber Command reassigned its groups to Twelfth Air Force, and eventually its heavy bombardment groups became the core of the newly activated Fifteenth Air Force, while its B-25 Mitchell medium bomber groups remained with Twelfth Air Force.

The command's headquarters at Soluch Airfield, Libya, was inactivated on 1 October 1943.

In England, and later on the continent after D-Day, IX Bomber Command became the medium bomber component of Ninth Air Force. Its initial mission was attack to German Atlantic Wall defenses along the English Channel coast of France. After D-Day, its primary mission was changed to fly tactical bombardment missions supporting Allied ground forces as they advanced from the Normandy Beaches across France into Germany.

In addition, it attacked enemy airfields in Nazi-occupied areas in support of Eighth Air Force strategic bombing missions as well as operations against German V-weapon sites. Additional missions involved attacks on rail marshaling yards, railroads, airfields, industrial plants, military installations, and other enemy targets in France, Belgium, and the Netherlands.

It was redesignated as the 9th Bombardment Division, Medium on 30 August 1944. The last combat missions was flown on 3 May 1945 by the 386th, 391st, 409th & 410th Bomb Groups.

In 1959, the 3958th Operational Training and Evaluation Squadron was reassigned to the division from SAC headquarters. At the same time the squadron was upgraded to a group and assigned the 3958th Combat Crew Training Squadron and the 3958th Consolidated Aircraft Maintenance Squadron.[3]

The 3958th, along with its counterpart 6592d Test Squadron of Air Research and Development Command, representatives of Air Materiel Command, Convair and other contractors formed the Convair B-58 Hustler test force, and, at the time of the 3958th's transfer, was involved in Category II testing of the B-58. This testing phase included tests of aircraft subsystems and its J79 engines. Before Category II tests were completed, seven aircraft were lost.[4]

Category II tests, led by the 6592d, were completed by the end of June 1960, and, Category III tests (operational testing) began in August. These tests were conducted primarily by the division's 43d Bombardment Wing (Carswell AFB, Ft. Worth, Texas) with the technical assistance of the remainder of test force. In anticipation of its expanded testing and crew-training mission for the Hustler, SAC had inactivated the 3958th and transferred its mission, personnel and equipment to the 43d Bomb Wing.[4]

In January 1967, the division began deploying B-52 aircraft and aircrews to Southeast Asia for combat operations, continuing until 1973. In 1975, the 19th provided air-refueling support for the evacuation of Vietnamese and Americans from South Vietnam. With the end of the Vietnam War, the division began transitioning control of most of its B-52 wings (with the exception of the 7th Bombardment Wing at Carswell AFB) into KC-135 Stratotanker air refueling and LGM-25C Titan II ICBM wings.

With the retirement of the Titan II in 1987, the 19th Air Division was itself inactivated in September 1988.